When you create Samsung Account, please click below if want to get emails.
But if already registered at SDF-B2B without clicking, then please follow below steps.
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Samsung account is the All-In-One account that can be used for all Samsung services. You can create single Samsung Account to get all the services and download SDK.
You can modify your profile setting including your basic / additional information
and your note setting to private / open to the public at My Profile.
If you are a developer or partner with Samsung D Forum, You can leave your question on the dforum.